Coupling rod for a flute operating system



FIG. 1 is a top elevational view for a coupling rod for a flute operating system, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a bottom elevational view thereof; and,

FIG. 5 is a top elevational view thereof as the coupling rod for a flute operating system may be positioned in a flute operating system.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a coupling rod for a flute operating system, as shown and described. 